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arXiv 1209.3296math.RTmath-phmath.MP
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Weyl凹室上的离散调和分析

Discrete harmonic analysis on a Weyl alcove

J. F. van Diejen, E. Emsiz

摘要:

引入了双仿射Hecke代数在临界水平q = 1上的差分反射算子表示,并利用它构造了Weyl凹穴上对应于中心元素的显式可积离散Laplacian.拉普拉斯算子的问题是被视为一个可积离散的传统拉普拉斯算子的欧氏空间上的δ-支持的仿射外尔群的反射超平面上的潜在的扰动。Bethe Answer方法表明,我们的离散拉普拉斯算子及其交换积分是对角化的周期Macdonald球函数的有限维基。

英文摘要:

We introduce a representation of the double affine Hecke algebra at the critical level q=1 in terms of difference-reflection operators and use it to construct an explicit integrable discrete Laplacian on the Weyl alcove corresponding to an element in the center. The Laplacian in question is to be viewed as an integrable discretization of the conventional Laplace operator on Euclidian space perturbed by a delta-potential supported on the reflection hyperplanes of the affine Weyl group. The Bethe Ansatz method is employed to show that our discrete Laplacian and its commuting integrals are diagonalized by a finite-dimensional basis of periodic Macdonald spherical functions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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